#####Install Gnocchi

######Install redis
```
apt-get install -y redis-server
```

#####Start redis server
```
service redis-server restart
```

######Install gnocchi
```
pip install gnocchi
```

######Add index database
```
cat << EOF | mysql -uroot -p
create database gnocchi;
grant all privileges on gnocchi.* to 'gnocchi'@'%' identified by 'saphi';
EOF
```
######Add user

```
openstack user create --domain default --password saphi  gnocchi
openstack role add --project service --user gnocchi admin
openstack service create --name gnocchi \
  --description "OpenStack metric" metric
openstack endpoint create --region RegionOne \
  metric public http://10.0.0.41:8041
openstack endpoint create --region RegionOne \
  metric internal http://10.0.0.41:8041
openstack endpoint create --region RegionOne \
  metric admin http://10.0.0.41:8041

```
#######Configure
`/etc/gnocchi/gnocchi.conf`


```
[DEFAULT]
debug = True
[storage]
file_basepath = /var/lib/gnocchi/
driver = file
coordination_url = redis://10.0.0.41:6379
[keystone_authtoken]
iauth_url = http://10.0.0.41:35357
auth_type = password
project_domain_name = default
user_domain_name = default
region_name = RegionOne
project_name = service
username = gnocchi
password = saphi
[metricd]
workers = 1
[statsd]
[cors]
[indexer]
url = mysql+pymysql://gnocchi:saphi@10.0.0.41/gnocchi
```

```
pip install sqlalchemy-utils redis pymysql lz4 tooz
```

####run gnocchi api under apache

```
cat << EOF >  /usr/local/bin/app.wsgi
from gnocchi.rest import app

application = app.build_wsgi_app()
EOF
```
#####Site available apache
```
Listen 8041

<VirtualHost *:8041>
    WSGIDaemonProcess gnocchi processes=5 threads=1 user=gnocchi group=gnocchi display-name=%{GROUP}
    WSGIProcessGroup gnocchi
    WSGIScriptAlias / /usr/local/bin/app.wsgi
    WSGIApplicationGroup %{GLOBAL}
    WSGIPassAuthorization On
    ErrorLogFormat "%{cu}t %M"
    ErrorLog /var/log/apache2/gnocchi.log
    CustomLog /var/log/apache2/gnocchi_access.log combined

    <Directory /usr/local/bin>
        Require all granted
    </Directory>
</VirtualHost>
```

#####Restart apache and run gnocchi-metricd

```
service apache2 restart
gnocchi-metricd
```

#####Config gnocchi as storage backend for ceilometer

- add gnocchi resource
```
curl -L 'https://raw.githubusercontent.com/openstack/ceilometer/master/etc/ceilometer/gnocchi_resources.yaml' > /etc/ceilometer/gnocchi_resources.yaml
```
- config `/etc/ceilometer/ceilometer.conf`

```
[DEFAULT]
dispatcher = gnocchi

[alarms]
gnocchi_url = http://10.0.0.41:8041

[dispatcher_gnocchi]
url = http://10.0.0.41:8041
filter_project = service
filter_service_activity = False
archive_policy = low
resources_definition_file = gnocchi_resources.yaml

```